A shielding structure for the gap between elevator car door sill and hall door sill

Abstract

The present invention discloses a shielding structure for the gap between the elevator car door sill and the hall door sill, comprising a car bottom, a car door and a car door sill; the car door sill is provided with a car door guide groove, the car door is provided with a car door guide block, a guide hole is provided at the bottom of the car door guide groove, and a transmission rack is provided at the lower side of the car door guide block; a transmission rod is horizontally provided below the transmission rack, and a plurality of slave transmission teeth are provided on the transmission rod; a worm is provided at one end of the transmission rod away from the car bottom, a driving rod is also horizontally provided below the car door sill, and a worm wheel is sleeved on the driving rod; a shielding plate is also provided directly below the car door, and one side of the shielding plate is connected to the driving rod. The present invention can shield the horizontal gap between the car door sill and the floor door sill when the elevator is parked, so as to better protect the personal and property safety of passengers when entering and exiting the elevator, thereby ensuring the normal operation of the elevator and improving safety.

Description

Technical Field

[0001] The invention relates to the technical field of elevators, and in particular to a shielding structure for a gap between an elevator car door sill and a hall door sill. Background Art

[0002] At present, the elevator door systems on the market are mainly divided into: car door system and floor door system. When the elevator is leveled, the car door system and the floor door system are connected, and passengers enter and exit the elevator through the car door system and the floor door system. The car door system is fixed on the elevator car and moves up and down in the hoistway with the elevator car. The floor door system is fixed on the elevator hoistway wall and remains stationary with the elevator hoistway (building or frame hoistway). Since the car door system and the floor door system are in relative operation, there must be a movement gap. When the elevator is leveled, the car door system and the floor door system are connected to the leveling components: there must be a horizontal gap between the car door sill and the floor door sill.

[0003] Due to safety considerations and national standards during the operation of the elevator, the horizontal gap between the car door sill and the hall door sill must not exceed 35mm. At present, the sill gap of elevators on the market is mostly around 30mm. It is precisely because of this 30mm gap that when the elevator stops at each floor to get on and off, if passengers accidentally drop their mobile phones, wallets, keys, bank cards and other small items, they are likely to fall into the gap. Smaller objects fall into the pit through the gap, causing personal property loss to passengers; in this case, passengers cannot take them out and can only ask the elevator maintenance personnel for on-site assistance, which increases the work intensity of the maintenance personnel. At the same time, objects that fall into the sill gap may damage the electrical components and safety components of the elevator shaft, causing the elevator to be unable to be used normally, affecting the safe operation of the elevator. Larger objects will be stuck in the gap, causing the elevator to be stuck and stopped, affecting the normal operation of the elevator.

[0004] Therefore, it is very meaningful to design a structure that can block the gap between the car door sill and the hall door sill. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a shielding structure for the gap between the elevator car door sill and the hall door sill, which can shield the horizontal gap between the car door sill and the floor door sill when the elevator is stopped, so as to better protect the personal and property safety of passengers when entering and exiting the elevator, prevent the elevator from being stuck, and avoid damage to the elevator, thereby ensuring the normal operation of the elevator and improving safety.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: a shielding structure for the gap between the elevator car door sill and the hall door sill, comprising a car platform, a car door and a car door sill; the car door sill is installed on one side of the car platform, and a car door guide groove is provided on the upper side of the car door sill along its length direction; the car door is located above the car door sill, and a car door guide block is provided on its lower side corresponding to the position of the car door guide groove; the car door and the car door sill are connected by the sliding cooperation of the car door guide block and the car door guide groove, and can slide freely along the car door sill; it is characterized in that: in the groove of the car door guide groove A guide hole is opened along the length direction of the bottom, and a transmission rack is arranged on the lower side of the car door guide block, the upper side of the transmission rack is connected to the car door guide block, and the lower side thereof is provided with a main transmission tooth, and the lower side of the transmission rack passes through the guide hole; a transmission rod is arranged horizontally below the transmission rack, and the transmission rod is located on one side of the car door, and the axial direction of the transmission rod is perpendicular to the length direction of the transmission rack, and the end of the transmission rod close to the car bottom is rotatably connected to the car bottom and can rotate freely around its axis; a plurality of slave transmission teeth are arranged around the transmission rod, and the slave transmission teeth can mesh with the main transmission teeth;

[0007] A worm is provided at one end of the transmission rod away from the car bottom, the worm is arranged coaxially with the transmission rod and can rotate synchronously with the transmission rod; a driving rod is also horizontally provided below the car door sill, the length direction of the driving rod is consistent with the length direction of the car door sill, and its length is greater than the width of the car door, and the two ends of the driving rod extend to the outside of the two sides of the car door respectively; the driving rod is connected to the car bottom through two support seats, wherein the two support seats are respectively located on the outside of the two sides of the car door; the driving rod is rotatably connected with the support seat and can rotate freely around its axis; on the driving rod, a worm wheel is sleeved at the position corresponding to the worm, the driving rod can rotate synchronously with the worm wheel, and the worm wheel is meshed with the worm;

[0008] A shielding plate is also provided directly below the car door, the length direction of the shielding plate is consistent with the length direction of the car door sill, one side of the shielding plate is connected to the driving rod, and the other side forms a free side, and the shielding plate can rotate with the driving rod;

[0009] In the initial state, when the car door is closed, the baffle is close to the side wall of the car bottom; when the car door is opening, the car door guide block drives the transmission rod and the worm to rotate synchronously through the transmission rack, and the worm drives the worm wheel and the drive rod to rotate, so that the baffle rotates in the direction away from the car bottom; when the car door is fully opened, the baffle can be in a horizontal state.

[0010] Furthermore, a return spring is provided between the car bottom and the shielding plate, one end of the return spring is connected to the side wall of the car bottom, and the other end is connected to the shielding plate; when the car door is closed, under the action of the return spring, the shielding plate is always in a vertical state.

[0011] Furthermore, a limiting seat is provided on the side wall of the car bottom, and under the action of the limiting seat, the shielding plate can be in a vertical state.

[0012] Furthermore, a detection switch is provided on the side of the limit seat away from the car bottom, and the detection switch can be triggered when the shielding plate is in a vertical state.

[0013] Furthermore, two ends of the guide hole extend to two ends close to the guide groove respectively.

[0014] Furthermore, the detection switch is connected in series with the elevator safety circuit, or is connected with the elevator control system.

[0015] Furthermore, the car door includes two door bodies, the transmission rack is two pieces, and is respectively located at the lower middle part of the two bodies; the transmission rod is two pieces, and is respectively located on the outer side of both sides of the car door; when the car door is opened, the two door bodies can drive the two transmission rods to rotate synchronously through the transmission rack.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. It has a simple structure and is easy to assemble. It can effectively eliminate the horizontal gap between the car door sill and the hall door sill when the elevator stops, thereby better protecting the personal and property safety of passengers when entering and exiting the elevator, and preventing the elevator from getting stuck due to objects falling into the gap, effectively ensuring the normal operation of the elevator and making the elevator more stable during operation.

[0018] 2. In the process of opening or closing the car door, this structure realizes the state control of the shielding plate through gear transmission, without the need for additional driving mechanism, thereby greatly reducing the energy consumption of the entire structure and improving the stability during the transmission process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view of the car door of the present invention when it is closed.

[0020] Figure 2 It is the front view of the car door of the present invention when it is opened.

[0021] Figure 3 It is a side view of the car door of the present invention when it is closed.

[0022] Figure 4 It is a side view of the car door of the present invention when it is opened.

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the car door of the present invention when it is closed.

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the car door of the present invention when it is opened.

[0025] In the figure: 1—car bottom, 2—car door, 3—car door sill, 4—transmission rack, 5—transmission rod, 6—worm, 7—driving rod, 8—support seat, 9—worm gear, 10—shielding plate, 11—reset spring, 12—limit seat, 13—detection switch, 14—floor plate or wall, 15—hallway door sill, 16—hallway door. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0027] Example: See Figures 1 to 6 A shielding structure for the gap between an elevator car door sill and a hall door sill comprises a car platform 1, a car door 2 and a car door sill 3. The car door sill 3 is installed on one side of the car platform 1, and the upper side of the car door sill 3 is flush with the upper side of the car platform 1, and a car door guide groove is provided on the upper side of the car door sill 3 along its length direction. The car door 2 is located above the car door sill 3, and a car door guide block is provided on its lower side corresponding to the position of the car door guide groove. The car door 2 is connected to the car door sill 3 through the cooperation and sliding of the car door guide block and the car door guide groove, and can slide freely along the car door sill 3.

[0028] A guide hole is provided at the bottom of the guide groove of the car door along its length direction, and a transmission rack 4 is provided at the lower side of the guide block of the car door; the upper side of the transmission rack 4 is connected to the guide block of the car door, and the lower side thereof has a main transmission tooth, and the lower side of the transmission rack 4 passes through the guide hole and is connected with the guide hole in a sliding manner. During implementation, the two ends of the guide hole extend to the two ends close to the guide groove respectively, so that the transmission rack 4 can move with the car door 2 in a wider range and has better applicability.

[0029] A transmission rod 5 is horizontally arranged below the transmission rack 4. The transmission rod 5 is located on one side of the car door 2. The axial direction of the transmission rod 5 is perpendicular to the length direction of the transmission rack 4. The end of the transmission rod 5 close to the car bottom 1 is rotatably connected to the car bottom 1 and can rotate freely around its axis. During the installation process, the end of the transmission rod 5 connected to the car bottom 1 is connected to a bearing. A bearing installation groove is provided on the side wall of the car bottom 1 at a position corresponding to the bearing. The bearing is installed in the bearing installation groove and is tightly matched with the car bottom 1. In this way, the installation is convenient, and the transmission rod 5 is supported and can rotate freely. A plurality of slave transmission teeth are arranged around the transmission rod 5, and when the car door 2 is opened, the slave transmission teeth can mesh with the main transmission teeth. A worm 6 is arranged at the end of the transmission rod 5 away from the car bottom 1. The worm 6 is arranged coaxially with the transmission rod 5 and can rotate synchronously with the transmission rod 5.

[0030] A driving rod 7 is also horizontally arranged below the car door sill 3. The length direction of the driving rod 7 is consistent with the length direction of the car door sill 3, and its length is greater than the width of the car door 2. The two ends of the driving rod 7 extend to the outside of the two sides of the car door 2 respectively. The driving rod 7 is connected to the car bottom 1 through two support seats 8, wherein the two support seats 8 are respectively located on the outside of the two sides of the car door 2. The driving rod 7 is rotatably connected to the support seats 8 and can rotate freely around its axis; during the installation process, the driving rod 7 is connected to the two support seats 8 through bearings, so that the rotation of the driving rod 7 is smoother. On the driving rod 7, a worm wheel 9 is sleeved at the position corresponding to the worm 6, and the driving rod 7 can rotate synchronously with the worm wheel 9, and the worm wheel 9 is meshed with the worm 6.

[0031] A shielding plate 10 is also provided directly below the car door 2, the length direction of the shielding plate 10 is consistent with the length direction of the car door sill 3, one side of the shielding plate 10 is connected to the driving rod 7, the other side forms a free side, and the shielding plate 10 can rotate with the driving rod 7. In implementation, the length of the shielding plate 10 is greater than or equal to the width of the car door 2, so that the gap within the door frame of the car door 2 can be better shielded.

[0032] In the initial state, when the car door 2 is closed, the free side of the baffle 10 is close to the side wall of the car platform 1, wherein, as a preference, the baffle 10 is in a vertical state; when the car door 2 is opened, the car door guide block drives the transmission rod 5 and the worm 6 to rotate synchronously through the transmission rack 4, and the worm 6 then drives the worm wheel 9 and the drive rod 7 to rotate, so that the free side of the baffle 10 rotates in the direction away from the car platform 1; when the car door 2 is fully opened, the baffle 10 can be in a horizontal state.

[0033] In specific implementation, a return spring 11 is further provided between the car bottom 1 and the shielding plate 10, wherein, in order to improve the return stability of the shielding plate 10, at least two return springs 11 are used. One end of the return spring 11 is connected to the side wall of the car bottom 1, and the other end is connected to the shielding plate 10; during the assembly process, when the car door 2 is closed, the main transmission gear and the slave transmission gear are in a separated state, and under the action of the return spring 11, the shielding plate 10 is close to the side wall of the car bottom 1. Preferably, a limit seat 12 is further provided on the side wall of the car bottom 1, and under the action of the limit seat 12, the shielding plate 10 can be in a vertical state; so that when the car door 2 is closed, the shielding plate 10 is always in a vertical state. In this way, the state of the shielding plate 10 when the elevator is running can be effectively guaranteed, and the shielding plate 10 can be prevented from affecting the operation of the elevator. A detection switch 13 is also provided on the side of the limit seat 12 away from the car bottom 1. When the baffle 10 is in a vertical state, the detection switch 13 can be triggered; during implementation, the detection switch 13 adopts a contact switch, and when the baffle 10 is in a vertical state, the contact switch can be triggered. The detection switch 13 is connected in series with the elevator safety circuit, or connected to the elevator control system. When the elevator is operating normally, the car door 2 is in a closed state. At this time, the return spring 11 tightens the baffle 10 to keep the baffle 10 vertical. At the same time, the baffle 10 contacts the contact switch to energize the switch safety circuit, and the elevator can run up and down normally. In this process, the baffle 10 is always firmly pulled by the spring; if the return spring 11 is loose, the baffle 10 cannot contact the contact switch, and the contact switch cannot be turned on, then the entire elevator safety circuit is disconnected, thereby avoiding safety hazards caused by the influence of the baffle 10 during the operation of the elevator.

[0034] As an implementation mode, the car door 2 includes two door bodies, the transmission rack 4 is two pieces, and is respectively located at the middle and lower parts of the two bodies; the transmission rod 5 is two pieces, and is respectively located at the outer sides of the two sides of the car door 2; when the car door 2 is opened, the two door bodies can drive the two transmission rods 5 to rotate synchronously through the transmission rack 4. In this way, the driving stability of the shielding plate 10 is better, so as to better ensure the stable operation of the entire structure.

[0035] During the installation process, a hall door sill 15 is installed on the floor plate or the wall 14, and a hall door 16 is installed above the hall door sill 15, wherein the upper side of the hall door sill 15 is flush with the floor plate or the wall 14, and the hall door 16 is slidably matched with the hall door sill 15 and can slide freely along the hall door sill 15. According to the installation design size of the car, a shielding plate 10 of appropriate width is selected to ensure that when the shielding plate 10 is in a horizontal state, the horizontal gap between the car door sill 3 and the hall door sill 15 can be completely blocked.

[0036] During operation, when the elevator runs to each floor, the car door 2 is driven by the door machine, and the two doors move left and right respectively. When the two doors move to a certain position, the transmission rack 4 starts to mesh with the transmission rod 5, driving the transmission rod 5 to rotate, and the worm 6 rotates to make the turbine rotate, and the drive rod 7 rotates at the same time. Since the shielding plate 10 is connected to the drive rod 7 as a whole, when the drive rod 7 rotates, the shielding plate 10 rotates accordingly. When the car door 2 is fully opened, the shielding plate 10 just rotates to the horizontal direction, so that the 30mm gap between the car door sill 3 and the hall door sill 15 is blocked, which plays a role in preventing small objects from sliding into the pit. At this time, the reset spring 11 is in a stretched state, and the force of the door machine is balanced with the stretching force of the spring. The detection switch 13 is powered off, the elevator safety circuit is disconnected, and the elevator always remains in a stopped state, which plays a role in safety protection.

[0037] When the elevator starts to resume normal operation from the leveling state, the car door 2 slowly closes, and the transmission rack 4 moves in the reverse direction. During this process, the worm 6 also rotates in the reverse direction, driving the turbine to rotate in the reverse direction, and the driving rod 7 and the shielding plate 10 also rotate in the reverse direction at the same time; when the transmission rack 4 is separated from the transmission rod 5, the return spring 11 pulls the shielding plate 10 back; finally, the door is closed in place, and the shielding plate 10 also rotates to the vertical direction and contacts the contact switch in place, so that the elevator returns to normal. The elevator starts running and repeats the above series of processes when it reaches other floors.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the technical solution. Those skilled in the art should understand that those modifications or equivalent substitutions of the technical solution of the present invention that do not depart from the purpose and scope of the technical solution should be included in the scope of the claims of the present invention.

Claims

1. A shielding structure for the gap between an elevator car door sill and a hall door sill, comprising a car platform, a car door and a car door sill; the car door sill is installed on one side of the car platform, a car door guide groove is provided on the upper side of the car door sill along its length direction, the car door is located above the car door sill, and a car door guide block is provided on the lower side of the car door corresponding to the position of the car door guide groove, the car door and the car door sill are connected by the cooperation and sliding of the car door guide block and the car door guide groove, and can slide freely along the car door sill; the characteristics are: A guide hole is provided at the bottom of the guide groove of the car door along its length direction, and a transmission rack is provided on the lower side of the guide block of the car door, the upper side of the transmission rack is connected to the guide block of the car door, and the lower side of the transmission rack is provided with a main transmission tooth, and the lower side of the transmission rack passes through the guide hole; a transmission rod is horizontally provided below the transmission rack, and the transmission rod is located on one side of the car door, the axial direction of the transmission rod is perpendicular to the length direction of the transmission rack, and the end of the transmission rod close to the car bottom is rotatably connected to the car bottom and can rotate freely around its axis; a plurality of slave transmission teeth are provided around the transmission rod, and the slave transmission teeth can mesh with the main transmission teeth; the car door includes two door bodies, the transmission rack is two pieces, and is respectively located below the middle of the two bodies; the transmission rod is two pieces, and is respectively located on the outer sides of both sides of the car door; when the car door is opened, the two door bodies can drive the two transmission rods to rotate synchronously through the transmission rack; A worm is provided at one end of the transmission rod away from the car bottom, the worm is arranged coaxially with the transmission rod and can rotate synchronously with the transmission rod; a driving rod is also horizontally provided below the car door sill, the length direction of the driving rod is consistent with the length direction of the car door sill, and its length is greater than the width of the car door, and the two ends of the driving rod extend to the outside of the two sides of the car door respectively; the driving rod is connected to the car bottom through two support seats, wherein the two support seats are respectively located on the outside of the two sides of the car door; the driving rod is rotatably connected with the support seat and can rotate freely around its axis; on the driving rod, a worm wheel is sleeved at the position corresponding to the worm, the driving rod can rotate synchronously with the worm wheel, and the worm wheel is meshed with the worm; A shielding plate is also provided directly below the car door, the length direction of the shielding plate is consistent with the length direction of the car door sill, one side of the shielding plate is connected to the driving rod, and the other side forms a free side, and the shielding plate can rotate with the driving rod; In the initial state, when the car door is closed, the shielding plate is close to the side wall of the car bottom; when the car door is opened, the car door guide block drives the transmission rod and the worm to rotate synchronously through the transmission rack, and the worm drives the worm wheel and the driving rod to rotate, so that the shielding plate rotates in the direction away from the car bottom; when the car door is fully opened, the shielding plate can be in a horizontal state; A return spring is also provided between the car bottom and the shielding plate, one end of the return spring is connected to the side wall of the car bottom, and the other end is connected to the shielding plate; when the car door is closed, under the action of the return spring, the shielding plate is always in a vertical state.

2. The shielding structure for the gap between the elevator car door sill and the hall door sill according to claim 1, characterized in that: A limiting seat is also provided on the side wall of the car bottom, under the action of which the shielding plate can be in a vertical state.

3. The shielding structure for the gap between the elevator car door sill and the hall door sill according to claim 2, characterized in that: A detection switch is also provided on the side of the limit seat away from the car bottom, and the detection switch can be triggered when the shielding plate is in a vertical state.

4. The shielding structure for the gap between the elevator car door sill and the hall door sill according to claim 3, characterized in that: The detection switch is connected in series with the elevator safety circuit, or is connected with the elevator control system.

5. The shielding structure for the gap between the elevator car door sill and the hall door sill according to claim 1, characterized in that: Two ends of the guide hole extend to two ends close to the guide groove respectively.

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